论文部分内容阅读
结合锑白白度研究,用X射线衍射法研究了锑白的物相组成。查明其中主要物相系立方型三氧化二锑(Senarmontite,方锑矿)和斜方型三氧化二锑(Valentinite,锑华)。用浓HC1和20%酒石酸分别处理锑白得到的残渣,经X射线粉末照相查明为斜方型四氧化二锑(Cerventite,锑赭石),残渣的总量约占0.15～0.2%(以Sb_2O_4表示)。研究结果表明锑白的白度和不同晶型三氧化二锑的含量变化有一定关系,当锑白中斜方型三氧化二锑的含量增加时,锑白的白度降低。用人工制备的斜方型三氧化二锑纯品加入白度极高的特号锑白,配成一系列人工试样,以X射线衍射仪法测定二种晶型三氧化二锑的最强衍射线,再用它们的强度比值对相应的斜方型三氧化二锑的加入量作出二者的关系曲线,根据此曲线测得的不同白度的锑白中斜方型Sb_2O_3含量,作出了斜方型Sb_2O_3含量和白度的关系曲线。
Combined with whiteness of antimony, the phase composition of antimony white was studied by X-ray diffraction. Identify the main phase of the system of cubic antimony trioxide (Senarmontite, Fang antimony ore) and the oblique type of antimony trioxide (Valentinite, antimony China). The residue obtained by treating antimony white with concentrated HC1 and 20% tartaric acid was identified by X-ray powder as rhombic antimony antimony (Cerventite, antimony ocher), and the total amount of residue was about 0.15-0.2% (Sb 2 O 4 Said). The results show that the whiteness of antimony white is related to the content of antimony trioxide in different crystal forms. The whiteness of antimony white decreases when the content of rhombic antimony trioxide in antimony white increases. The artificially prepared orthorhombic antimony trioxide pure antimony white by adding a very high degree of antimony white, dubbed a series of artificial samples to determine by X-ray diffraction of the two crystal forms of the strongest antimony trioxide Diffraction lines, and then their intensity ratio of the corresponding amount of rhombus-type antimony trioxide to make the relationship between the two curves, measured according to the curve of the whiteness of antimony white in the orthorhombic Sb 2 O 3 content, made Diagonal square Sb 2 O 3 content and whiteness curve.